<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
    <script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>
</head>
<body>

<button type="button">初始化vue</button>
<script>
$(function(){
    $('body').append('<div id="app">{{message}}</div><div class="app">{{message}}</div>')
    $('button').on('click', function(){
        new Vue({
            el: '.app',
            data:{
                message: 'Hello Vue.js'
            }
        })
    })
})

</script>
</body>
</html>